Industrial pH/ORP Sensors for Liquid Analysis
The ASTI proprietary and novel highly modular and application specific sensor design provides the needed versatility and flexibility to create customized solutions to meet the most demanding measurement applications. Each built-to-order sensor model chosen and selected options invoked are based upon a thorough review of the customer supplied application information by senior in-house chemists to ensure that the best possible pH sensor or ORP sensor which is suitable for the intended process measurement & installation scheme is supplied at the lowest possible price by not including any unnecessary features. These custom built-to-order sensors can interface with most all existing control equipment to serve as replacement sensors to retrofit existing installations or else are also available as smart digital sensors for use in new installation complete with mating intelligent digital transmitters.
- Substantially improved sensor service lifetime leading to substantially reduced cost of ownership
- Reduced cleaning and calibration requirements due to rugged industrial construction and solid-state reference
= Reduced damage from mechanical wear with extremely rugged industrial construction and fault-tolerant design
- Optimized sensor components, design and fabrication that is individually selected for your exact application requirements ensure optimal performance all while while minimizing cost of ownership
The leading novel and proprietary solid-state industrial pH/ORP sensor design and technology combined with built-to-order extensively configurable manufacturing. Each standard and customized sensor design is based on a thorough review of the customer supplied application information by senior in-house chemists to ensure that the best possible choice of available pH/ORP sensor model.
Inline, Immersion & Submersible Series pH Sensors & ORP Sensors
- Industrial pH/ORP sensors designed for continuous measurement of pH (acidity/alkalinity) and ORP
(oxidation-reduction potential) in liquid process environments. - Durable, industrial-grade electrochemical sensors designed for:
- Inline installation (directly in a pipe or flow line); Immersion (dipped into tanks or open vessels); Submersible use (fully submerged in a liquid environment)
- Used with monitoring or control systems in process industries
- Data from these sensors is used to:
- Maintain chemical balance
- Ensure process efficiency
- Protect equipment from corrosion or scaling
- Ideal for challenging environments that require reliable, real-time monitoring, and can be integrated into SCADA systems, PLC-based controls, or digital IIoT platforms
- Can operate in a temperature range from -35 to 150 degrees Celsius at pressures up to 150 psig
Twist Lock pH Sensors & ORP Sensors for Inline Installations Requiring Easy & Fast Insertion & Removal from Process
Industrial electrochemical sensors designed with a quick-connect bayonet-style fitting ("twist lock") that allows them to be easily installed and removed from inline process connections, typically without tools or process interruption (if installed in a retractable holder).
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- Twist Lock pH/ORP sensors provide easy maintenance, secure installation, and
accurate monitoring of chemical conditions in flowing process lines. - The sensor is inserted into a specially designed inline process fitting (often with a twist-lock holder or retractable assembly). It forms a sealed connection, allowing fluid to flow past the sensing element.
- Readings are transmitted to a controller or transmitter (via analog or digital signal).
- The twist-lock design enables fast replacement, cleaning or maintenance, often without shutting down the process.
- *THESE ARE BUILT-TO-ORDER SENSORS WITH EXTENSIVE CUSTOMIZATION OPTIONS
- Twist Lock pH/ORP sensors provide easy maintenance, secure installation, and
Sensors for HOT-TAP Valve Retractable Installations
Industrial-grade sensors designed to be inserted and removed from a live process line or tank using a HOT-TAP retractable assembly without stopping
the process or depressurizing the system. These are essential for real-time chemical monitoring and control in critical applications where process interruption is costly or not feasible.
- HOT-TAP retractable pH/ORP sensors offer a safe, non-intrusive method for maintaining critical liquid analysis equipment without process interruption.
- *THESE ARE BUILT-TO-ORDER SENSORS WITH EXTENSIVE CUSTOMIZATION OPTIONS
Sanitary pH Sensors & ORP Sensors
For Tri Clover Installations Requiring Chemical Clean-In-Place (CIP) Sterilization
Specialized electrochemical sensors designed for clean-in-place (CIP), sterilize-in-place (SIP), and hygienic applications. They feature a Tri-Clamp (also called Tri-Clover) sanitary fitting, which provides a crevice-free, smooth surface connection that meets strict FDA and 3-A sanitary standards.- Sanitary sensors are ideal for: Food & beverage production; Pharmaceutical & biotech manufacturing; Cosmetics; Nutraceuticals; Clean water systems in life sciences and healthcare.
- 316SS Sanitary Sensor Fitting available in 1.5″, 2.0″ or 2.5″ Tri-Clover sizes (other larger sizes available upon request).
- All 5X31, 5X41 & 5X51 series pH sensors and ORP sensors are supplied without tines (no guard) as the standard configuration (default). Four (4) each protective tines (“GR”) or 2 each protective tines (“GRO”) are available in both the full length 0.5″ inches (for pH sensors) or the reduced 0.3″ inch length (typically for parabolic pH or ORP sensors).
- Fast response (AccuTempTM) temperature compensation option recommended for all sanitary installations
- *THESE ARE BUILT-TO-ORDER SENSORS WITH EXTENSIVE CUSTOMIZATION OPTIONS
ANALOG & SMART DIGITAL ZEUS™ pH SENSORS & ORP SENSORS
FOR THE TOUGHEST INDUSTRIAL APPLICATIONS
FOR INLINE, IMMERSION AND FULLY SUBMERSIBLE INSTALLATIONS
Designed for Tough Environments:
- Rugged construction for inline, immersion, and submersible applications
- Withstands high temperatures, pressures, abrasive slurries, and harsh chemicals (e.g. ammonia, chlorine, sulfide gases)
- Core Technology:
- Solid-state, non-porous conductive polymer reference system
- Thick-wall, parabolic pH glass for break resistance
- Triple junction design resists gas/ion/solvent intrusion
- Resists dehydration, cracking, and reduces cleaning needs
- Wide Compatibility:
- pH range: -0.5 to 14.5
- Temp range: -15°C to +150°C
- Pressure: Up to 200 psig
- Organic solvents and volatile media compatible
- Sensor Configurations (Analog & Smart Digital)
- Analog Models:
- Universal (Item #1202): No preamp; ≤25 ft cable; for direct OEM connections
- Conventional Preamplifier (Item #1203): 20 ft cable + snap connector; up to 330 ft total
- 5-Wire Differential Preamplifier (Item #1204): 20 ft cable + snap connector; up to 1,000 ft total
- Analog Models:
- Smart Digital Models:
- HiQ Smart Digital (Item #1205): Plug & play with 3TX-HiQ-pH transmitter; up to 2,000 ft cable
- HiQDT MODBUS RTU: Connects directly to SCADA, PLC, dataloggers (as MODBUS RTU slave)
- Available for both pH and ORP applications
- Durability & Construction Features
- Housing: Made with RADEL® (PPSU) and KYNAR® (PVDF) for chemical & thermal resistance
- Body: Extra-thick (5.6 mm) sensor body resists vibration and mechanical wear
- Sealed Threaded End (1.25" MNPT): For inline, immersion, or submersible installs
- Wrench Flats: Prevent overtightening during installation/maintenance
- Standard Sensor Features
- ACCU-TEMP Pt1000 Temperature Compensation
- 4x 3mm Ultra-Thick Protective Tines to guard pH glass
- Solution Ground with Hastelloy® C-276 (on Universal & 5-wire models)
- Snap Connectors (NEMA 6P/IP67) for waterproofing on preamp/digital models
- QR Code on Sensor Label: Links to spec sheets and configuration info
- Customization Options
- ZEUS™ sensors only available in fixed configurations above
- For custom builds, consider IOTRON™ series (built to order, short lead times)
Smart Modbus Sensors and Touchscreen Controllers
HiQDT smart digital sensors have integral RS-485 MODBUS RTU communications allowing them to be connected directly with a very wide array of devices ushering a new era in continuous industrial field measurements where the brand of data acquisition & control device is decoupled from the manufacturer of the smart digital sensor giving true freedom of choice back to the customer to select their preferred vendors for each aspect of liquid analytical analysis without artificial restrictions.
The HiQDT product line is designed to allow for seamless integration with either customer supplied PLC & HMI or else available as turn-key plug and play packages from the ASTI factory ready for commissioning right out of the box. Systems are available for continuous inline measurement and control in hazardous or safe locations employing rugged LED or advanced touchscreen interfaces.
The same HiQDT smart digital RS485 MODBSU RTU sensor used for continuous measurements can also be employed for intermittent measurements when used with an ultralow power battery or solar datalogger to record measurements and then wirelessly transmit this data from remote site locations. ASTI Windows setup and calibration software for HiQDT smart RTU sensors allows for adjustment of all user accessible parameters as desired and is provided free of charge. The battery-powered handheld communicator provides a very simple method for plug and play calibration and setup of various adjustable parameters in the field or in the workshop. Since all calibration and configuration information is integral to the sensor this allows for plug and play hot-swap use between any mating device that has been properly configured without any special user action required in the field.
As manufacturer's reps, we bridge the gap between manufacturers and you (the end user). Our representatives not only provide insights into the latest advancements in instrumentation but also offer hands-on support to help our clients navigate complex applications. We leverage our vast industry knowledge to find solutions that improve process and reduce costs. Our reps help to streamline the often long and technical sales process. It is our priority to always deliver personalized service and support and form long-term partnerships with our clients.